./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_11-ptr_racing.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_11-ptr_racing.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-958ec4d-m [2024-02-07 14:54:01,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:54:02,013 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:54:02,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:54:02,016 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:54:02,028 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:54:02,028 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:54:02,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:54:02,029 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:54:02,029 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:54:02,029 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:54:02,030 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:54:02,030 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:54:02,030 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:54:02,031 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:54:02,031 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:54:02,031 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:54:02,032 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:54:02,032 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:54:02,032 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:54:02,033 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:54:02,040 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:54:02,040 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:54:02,041 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:54:02,041 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:54:02,041 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:54:02,042 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:54:02,042 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:54:02,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:54:02,042 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:54:02,043 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:54:02,043 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:54:02,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:54:02,044 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:54:02,044 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:54:02,044 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:54:02,044 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:54:02,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:54:02,045 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:54:02,045 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:54:02,045 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:54:02,046 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:54:02,046 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:54:02,046 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:54:02,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:54:02,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:54:02,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:54:02,429 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:54:02,429 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:54:02,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_11-ptr_racing.yml/witness.yml [2024-02-07 14:54:02,517 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:54:02,518 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:54:02,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2024-02-07 14:54:03,670 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:54:03,865 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:54:03,866 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2024-02-07 14:54:03,876 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef8678536/ba702a41febf4d5f91d9880b9a12f13b/FLAGf04f4118e [2024-02-07 14:54:03,887 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef8678536/ba702a41febf4d5f91d9880b9a12f13b [2024-02-07 14:54:03,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:54:03,888 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:54:03,889 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:54:03,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:54:03,900 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:54:03,901 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:02" (1/2) ... [2024-02-07 14:54:03,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@515db5d0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:03, skipping insertion in model container [2024-02-07 14:54:03,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:02" (1/2) ... [2024-02-07 14:54:03,903 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@cbbafe0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:03, skipping insertion in model container [2024-02-07 14:54:03,903 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:54:03" (2/2) ... [2024-02-07 14:54:03,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@515db5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:03, skipping insertion in model container [2024-02-07 14:54:03,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:54:03" (2/2) ... [2024-02-07 14:54:03,905 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:54:03,952 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:54:03,953 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] (1 <= global) && (p == & global) [2024-02-07 14:54:03,953 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] ((0 <= global) && (0 <= *p)) && (p == & global) [2024-02-07 14:54:03,953 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] ((1 <= global) && (1 <= *p)) && (p == & global) [2024-02-07 14:54:03,954 INFO L76 edCorrectnessWitness]: Location invariant before [L704-L704] p == & global [2024-02-07 14:54:03,954 INFO L76 edCorrectnessWitness]: Location invariant after [L712-L712] ((((((((((((((((((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6 [2024-02-07 14:54:03,954 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] p == & global [2024-02-07 14:54:03,955 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] (0 <= *p) && (p == & global) [2024-02-07 14:54:03,955 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] ((0 <= global) && (0 <= *p)) && (p == & global) [2024-02-07 14:54:03,955 INFO L76 edCorrectnessWitness]: Location invariant after [L708-L708] ((((((((((((((((((((((((i == 19 || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20 [2024-02-07 14:54:03,955 INFO L76 edCorrectnessWitness]: Location invariant before [L710-L710] 0 <= global [2024-02-07 14:54:03,955 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] p == & global [2024-02-07 14:54:03,955 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] ((0 <= global) && (global <= 2147483646)) && (p == & global) [2024-02-07 14:54:03,955 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] ((1 <= global) && (1 <= *p)) && (p == & global) [2024-02-07 14:54:03,956 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] (1 <= global) && (p == & global) [2024-02-07 14:54:03,956 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] ((0 <= global) && (global <= 2147483646)) && (p == & global) [2024-02-07 14:54:03,956 INFO L76 edCorrectnessWitness]: Location invariant before [L708-L708] ((((((((((((((((((((((((i == 19 || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20 [2024-02-07 14:54:03,956 INFO L76 edCorrectnessWitness]: Location invariant before [L712-L712] ((((((((((((((((((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6 [2024-02-07 14:54:03,956 INFO L76 edCorrectnessWitness]: Location invariant before [L705-L705] p == & global [2024-02-07 14:54:03,956 INFO L76 edCorrectnessWitness]: Location invariant after [L710-L710] 0 <= global [2024-02-07 14:54:03,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:54:04,236 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i[30176,30189] [2024-02-07 14:54:04,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:54:04,271 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:54:04,311 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i[30176,30189] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:54:04,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:54:04,392 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:54:04,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:04 WrapperNode [2024-02-07 14:54:04,393 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:54:04,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:54:04,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:54:04,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:54:04,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:04" (1/1) ... [2024-02-07 14:54:04,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:04" (1/1) ... [2024-02-07 14:54:04,446 INFO L138 Inliner]: procedures = 171, calls = 57, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2024-02-07 14:54:04,446 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:54:04,447 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:54:04,447 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:54:04,447 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:54:04,455 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:04" (1/1) ... [2024-02-07 14:54:04,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:04" (1/1) ... [2024-02-07 14:54:04,457 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:04" (1/1) ... [2024-02-07 14:54:04,468 INFO L175 MemorySlicer]: Split 34 memory accesses to 6 slices as follows [2, 5, 5, 5, 15, 2]. 44 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 5, 5, 5, 1, 0]. The 3 writes are split as follows [0, 0, 0, 0, 2, 1]. [2024-02-07 14:54:04,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:04" (1/1) ... [2024-02-07 14:54:04,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:04" (1/1) ... [2024-02-07 14:54:04,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:04" (1/1) ... [2024-02-07 14:54:04,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:04" (1/1) ... [2024-02-07 14:54:04,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:04" (1/1) ... [2024-02-07 14:54:04,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:04" (1/1) ... [2024-02-07 14:54:04,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:54:04,485 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:54:04,485 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:54:04,485 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:54:04,499 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:04" (1/1) ... [2024-02-07 14:54:04,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:54:04,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:04,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 14:54:04,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 14:54:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:54:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:54:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:54:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:54:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:54:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 14:54:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:54:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:54:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:54:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:54:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:54:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 14:54:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:54:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:54:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:54:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 14:54:04,580 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 14:54:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:54:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:54:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:54:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:54:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:54:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:54:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 14:54:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:54:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:54:04,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:54:04,582 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:54:04,808 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:54:04,810 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:54:05,068 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:54:05,069 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:54:05,223 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:54:05,223 INFO L320 CfgBuilder]: Removed 10 assume(true) statements. [2024-02-07 14:54:05,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:54:05 BoogieIcfgContainer [2024-02-07 14:54:05,224 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:54:05,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:54:05,227 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:54:05,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:54:05,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:02" (1/4) ... [2024-02-07 14:54:05,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa0b4f0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:54:05, skipping insertion in model container [2024-02-07 14:54:05,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:54:03" (2/4) ... [2024-02-07 14:54:05,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa0b4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:54:05, skipping insertion in model container [2024-02-07 14:54:05,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:04" (3/4) ... [2024-02-07 14:54:05,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa0b4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:54:05, skipping insertion in model container [2024-02-07 14:54:05,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:54:05" (4/4) ... [2024-02-07 14:54:05,232 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2024-02-07 14:54:05,245 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:54:05,245 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-02-07 14:54:05,245 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:54:05,282 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 14:54:05,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 73 transitions, 153 flow [2024-02-07 14:54:05,345 INFO L124 PetriNetUnfolderBase]: 13/95 cut-off events. [2024-02-07 14:54:05,345 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 14:54:05,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 95 events. 13/95 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 344 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2024-02-07 14:54:05,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 73 transitions, 153 flow [2024-02-07 14:54:05,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 72 transitions, 151 flow [2024-02-07 14:54:05,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:54:05,366 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@8aa848e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:54:05,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-02-07 14:54:05,372 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:54:05,373 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-02-07 14:54:05,373 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:54:05,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:05,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:54:05,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2024-02-07 14:54:05,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:05,379 INFO L85 PathProgramCache]: Analyzing trace with hash 406611825, now seen corresponding path program 1 times [2024-02-07 14:54:05,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:05,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239583613] [2024-02-07 14:54:05,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:05,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:05,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:05,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239583613] [2024-02-07 14:54:05,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239583613] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:05,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:05,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:05,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220440756] [2024-02-07 14:54:05,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:05,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:05,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:05,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:05,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:54:05,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2024-02-07 14:54:05,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 72 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:05,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:05,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2024-02-07 14:54:05,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:05,829 INFO L124 PetriNetUnfolderBase]: 48/188 cut-off events. [2024-02-07 14:54:05,829 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:54:05,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 188 events. 48/188 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 579 event pairs, 24 based on Foata normal form. 24/202 useless extension candidates. Maximal degree in co-relation 294. Up to 99 conditions per place. [2024-02-07 14:54:05,837 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 36 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-02-07 14:54:05,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 58 transitions, 196 flow [2024-02-07 14:54:05,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:54:05,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:54:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-02-07 14:54:05,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787671232876712 [2024-02-07 14:54:05,850 INFO L175 Difference]: Start difference. First operand has 66 places, 72 transitions, 151 flow. Second operand 4 states and 169 transitions. [2024-02-07 14:54:05,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 58 transitions, 196 flow [2024-02-07 14:54:05,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:54:05,855 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 90 flow [2024-02-07 14:54:05,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-02-07 14:54:05,860 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -19 predicate places. [2024-02-07 14:54:05,860 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 90 flow [2024-02-07 14:54:05,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:05,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:05,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:54:05,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:54:05,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2024-02-07 14:54:05,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:05,862 INFO L85 PathProgramCache]: Analyzing trace with hash 406614014, now seen corresponding path program 1 times [2024-02-07 14:54:05,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:05,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603397360] [2024-02-07 14:54:05,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:05,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:05,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:05,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603397360] [2024-02-07 14:54:05,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603397360] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:05,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:05,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:05,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882687948] [2024-02-07 14:54:05,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:05,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:05,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:05,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:05,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:54:05,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-02-07 14:54:05,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:05,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:05,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-02-07 14:54:05,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:06,041 INFO L124 PetriNetUnfolderBase]: 60/204 cut-off events. [2024-02-07 14:54:06,041 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-02-07 14:54:06,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 204 events. 60/204 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 598 event pairs, 18 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 363. Up to 92 conditions per place. [2024-02-07 14:54:06,043 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 27 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-02-07 14:54:06,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 166 flow [2024-02-07 14:54:06,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:54:06,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:54:06,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-02-07 14:54:06,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-02-07 14:54:06,045 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 90 flow. Second operand 4 states and 132 transitions. [2024-02-07 14:54:06,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 166 flow [2024-02-07 14:54:06,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:54:06,046 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 93 flow [2024-02-07 14:54:06,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-02-07 14:54:06,047 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -19 predicate places. [2024-02-07 14:54:06,047 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 93 flow [2024-02-07 14:54:06,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:06,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:06,047 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-07 14:54:06,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:54:06,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2024-02-07 14:54:06,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:06,048 INFO L85 PathProgramCache]: Analyzing trace with hash -88045436, now seen corresponding path program 1 times [2024-02-07 14:54:06,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:06,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306581781] [2024-02-07 14:54:06,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:06,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:54:06,064 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:54:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:54:06,085 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:54:06,085 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:54:06,086 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-02-07 14:54:06,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 23 remaining) [2024-02-07 14:54:06,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 23 remaining) [2024-02-07 14:54:06,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (19 of 23 remaining) [2024-02-07 14:54:06,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 23 remaining) [2024-02-07 14:54:06,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 23 remaining) [2024-02-07 14:54:06,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 23 remaining) [2024-02-07 14:54:06,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 23 remaining) [2024-02-07 14:54:06,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 23 remaining) [2024-02-07 14:54:06,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 23 remaining) [2024-02-07 14:54:06,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 23 remaining) [2024-02-07 14:54:06,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 23 remaining) [2024-02-07 14:54:06,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 23 remaining) [2024-02-07 14:54:06,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 23 remaining) [2024-02-07 14:54:06,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 23 remaining) [2024-02-07 14:54:06,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 23 remaining) [2024-02-07 14:54:06,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 23 remaining) [2024-02-07 14:54:06,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 23 remaining) [2024-02-07 14:54:06,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 23 remaining) [2024-02-07 14:54:06,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 23 remaining) [2024-02-07 14:54:06,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 23 remaining) [2024-02-07 14:54:06,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 23 remaining) [2024-02-07 14:54:06,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 23 remaining) [2024-02-07 14:54:06,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:54:06,092 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-02-07 14:54:06,093 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 14:54:06,093 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 14:54:06,115 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 14:54:06,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 116 transitions, 248 flow [2024-02-07 14:54:06,131 INFO L124 PetriNetUnfolderBase]: 24/173 cut-off events. [2024-02-07 14:54:06,132 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-07 14:54:06,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 173 events. 24/173 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 782 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 114. Up to 6 conditions per place. [2024-02-07 14:54:06,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 116 transitions, 248 flow [2024-02-07 14:54:06,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 116 transitions, 248 flow [2024-02-07 14:54:06,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:54:06,136 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@8aa848e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:54:06,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2024-02-07 14:54:06,138 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:54:06,138 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-02-07 14:54:06,138 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:54:06,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:06,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:54:06,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2024-02-07 14:54:06,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:06,139 INFO L85 PathProgramCache]: Analyzing trace with hash 517352795, now seen corresponding path program 1 times [2024-02-07 14:54:06,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:06,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365301476] [2024-02-07 14:54:06,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:06,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:06,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:06,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365301476] [2024-02-07 14:54:06,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365301476] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:06,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:06,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:06,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462940700] [2024-02-07 14:54:06,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:06,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:06,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:06,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:06,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:54:06,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 116 [2024-02-07 14:54:06,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 116 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:06,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:06,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 116 [2024-02-07 14:54:06,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:08,164 INFO L124 PetriNetUnfolderBase]: 10068/22162 cut-off events. [2024-02-07 14:54:08,164 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-02-07 14:54:08,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38091 conditions, 22162 events. 10068/22162 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 205919 event pairs, 3130 based on Foata normal form. 3666/23662 useless extension candidates. Maximal degree in co-relation 27492. Up to 13235 conditions per place. [2024-02-07 14:54:08,280 INFO L140 encePairwiseOnDemand]: 95/116 looper letters, 126 selfloop transitions, 7 changer transitions 0/177 dead transitions. [2024-02-07 14:54:08,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 177 transitions, 649 flow [2024-02-07 14:54:08,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:54:08,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:54:08,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2024-02-07 14:54:08,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6706896551724137 [2024-02-07 14:54:08,284 INFO L175 Difference]: Start difference. First operand has 104 places, 116 transitions, 248 flow. Second operand 5 states and 389 transitions. [2024-02-07 14:54:08,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 177 transitions, 649 flow [2024-02-07 14:54:08,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 177 transitions, 649 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:54:08,287 INFO L231 Difference]: Finished difference. Result has 111 places, 107 transitions, 266 flow [2024-02-07 14:54:08,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=111, PETRI_TRANSITIONS=107} [2024-02-07 14:54:08,288 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 7 predicate places. [2024-02-07 14:54:08,288 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 107 transitions, 266 flow [2024-02-07 14:54:08,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:08,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:08,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:54:08,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:54:08,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2024-02-07 14:54:08,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:08,290 INFO L85 PathProgramCache]: Analyzing trace with hash 517350606, now seen corresponding path program 1 times [2024-02-07 14:54:08,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:08,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128616104] [2024-02-07 14:54:08,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:08,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:08,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:08,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128616104] [2024-02-07 14:54:08,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128616104] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:08,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:08,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:08,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864530882] [2024-02-07 14:54:08,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:08,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:08,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:08,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:08,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:54:08,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 116 [2024-02-07 14:54:08,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 107 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:08,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:08,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 116 [2024-02-07 14:54:08,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:10,013 INFO L124 PetriNetUnfolderBase]: 8377/18032 cut-off events. [2024-02-07 14:54:10,013 INFO L125 PetriNetUnfolderBase]: For 1633/1633 co-relation queries the response was YES. [2024-02-07 14:54:10,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33057 conditions, 18032 events. 8377/18032 cut-off events. For 1633/1633 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 160463 event pairs, 2983 based on Foata normal form. 0/16345 useless extension candidates. Maximal degree in co-relation 31580. Up to 12415 conditions per place. [2024-02-07 14:54:10,106 INFO L140 encePairwiseOnDemand]: 112/116 looper letters, 114 selfloop transitions, 3 changer transitions 0/165 dead transitions. [2024-02-07 14:54:10,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 165 transitions, 656 flow [2024-02-07 14:54:10,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:54:10,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:54:10,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 300 transitions. [2024-02-07 14:54:10,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.646551724137931 [2024-02-07 14:54:10,108 INFO L175 Difference]: Start difference. First operand has 111 places, 107 transitions, 266 flow. Second operand 4 states and 300 transitions. [2024-02-07 14:54:10,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 165 transitions, 656 flow [2024-02-07 14:54:10,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 165 transitions, 656 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:54:10,114 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 284 flow [2024-02-07 14:54:10,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2024-02-07 14:54:10,115 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 12 predicate places. [2024-02-07 14:54:10,115 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 284 flow [2024-02-07 14:54:10,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:10,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:10,116 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:10,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:54:10,116 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2024-02-07 14:54:10,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:10,117 INFO L85 PathProgramCache]: Analyzing trace with hash -880174995, now seen corresponding path program 1 times [2024-02-07 14:54:10,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:10,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321080141] [2024-02-07 14:54:10,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:10,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:10,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 14:54:10,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:10,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321080141] [2024-02-07 14:54:10,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321080141] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:10,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:10,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:10,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528104749] [2024-02-07 14:54:10,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:10,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:10,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:10,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:10,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:54:10,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 116 [2024-02-07 14:54:10,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:10,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:10,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 116 [2024-02-07 14:54:10,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:11,749 INFO L124 PetriNetUnfolderBase]: 10217/21121 cut-off events. [2024-02-07 14:54:11,750 INFO L125 PetriNetUnfolderBase]: For 3346/3346 co-relation queries the response was YES. [2024-02-07 14:54:11,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40793 conditions, 21121 events. 10217/21121 cut-off events. For 3346/3346 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 186365 event pairs, 3336 based on Foata normal form. 0/19810 useless extension candidates. Maximal degree in co-relation 39044. Up to 13542 conditions per place. [2024-02-07 14:54:11,882 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 128 selfloop transitions, 8 changer transitions 0/180 dead transitions. [2024-02-07 14:54:11,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 180 transitions, 744 flow [2024-02-07 14:54:11,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:54:11,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:54:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2024-02-07 14:54:11,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6103448275862069 [2024-02-07 14:54:11,884 INFO L175 Difference]: Start difference. First operand has 116 places, 108 transitions, 284 flow. Second operand 5 states and 354 transitions. [2024-02-07 14:54:11,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 180 transitions, 744 flow [2024-02-07 14:54:11,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 180 transitions, 739 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:54:11,891 INFO L231 Difference]: Finished difference. Result has 122 places, 112 transitions, 328 flow [2024-02-07 14:54:11,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=122, PETRI_TRANSITIONS=112} [2024-02-07 14:54:11,893 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 18 predicate places. [2024-02-07 14:54:11,894 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 112 transitions, 328 flow [2024-02-07 14:54:11,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:11,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:11,894 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-02-07 14:54:11,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:54:11,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2024-02-07 14:54:11,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:11,895 INFO L85 PathProgramCache]: Analyzing trace with hash -880178496, now seen corresponding path program 1 times [2024-02-07 14:54:11,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:11,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557849933] [2024-02-07 14:54:11,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:11,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:12,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:12,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557849933] [2024-02-07 14:54:12,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557849933] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:54:12,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139546611] [2024-02-07 14:54:12,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:12,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:12,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:12,003 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:54:12,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 14:54:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:12,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 14:54:12,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:54:12,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:12,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:54:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:12,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139546611] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:54:12,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:54:12,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 14:54:12,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745686429] [2024-02-07 14:54:12,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:54:12,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:54:12,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:12,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:54:12,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:54:12,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 116 [2024-02-07 14:54:12,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 112 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:12,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:12,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 116 [2024-02-07 14:54:12,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:12,607 INFO L124 PetriNetUnfolderBase]: 2084/4754 cut-off events. [2024-02-07 14:54:12,608 INFO L125 PetriNetUnfolderBase]: For 2151/2151 co-relation queries the response was YES. [2024-02-07 14:54:12,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9453 conditions, 4754 events. 2084/4754 cut-off events. For 2151/2151 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 34035 event pairs, 671 based on Foata normal form. 618/5156 useless extension candidates. Maximal degree in co-relation 9077. Up to 2673 conditions per place. [2024-02-07 14:54:12,632 INFO L140 encePairwiseOnDemand]: 112/116 looper letters, 107 selfloop transitions, 3 changer transitions 0/149 dead transitions. [2024-02-07 14:54:12,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 149 transitions, 684 flow [2024-02-07 14:54:12,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:54:12,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:54:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 332 transitions. [2024-02-07 14:54:12,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5724137931034483 [2024-02-07 14:54:12,634 INFO L175 Difference]: Start difference. First operand has 122 places, 112 transitions, 328 flow. Second operand 5 states and 332 transitions. [2024-02-07 14:54:12,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 149 transitions, 684 flow [2024-02-07 14:54:12,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 149 transitions, 680 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:54:12,638 INFO L231 Difference]: Finished difference. Result has 102 places, 88 transitions, 270 flow [2024-02-07 14:54:12,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=102, PETRI_TRANSITIONS=88} [2024-02-07 14:54:12,639 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -2 predicate places. [2024-02-07 14:54:12,639 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 88 transitions, 270 flow [2024-02-07 14:54:12,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:12,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:12,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:12,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-07 14:54:12,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:12,855 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2024-02-07 14:54:12,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:12,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1141691969, now seen corresponding path program 1 times [2024-02-07 14:54:12,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:12,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336015812] [2024-02-07 14:54:12,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:12,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:12,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:12,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336015812] [2024-02-07 14:54:12,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336015812] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:12,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:12,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:12,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205827862] [2024-02-07 14:54:12,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:12,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:54:12,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:12,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:54:12,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:54:12,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 116 [2024-02-07 14:54:12,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 88 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:12,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:12,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 116 [2024-02-07 14:54:12,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:13,352 INFO L124 PetriNetUnfolderBase]: 2455/5515 cut-off events. [2024-02-07 14:54:13,352 INFO L125 PetriNetUnfolderBase]: For 1911/1911 co-relation queries the response was YES. [2024-02-07 14:54:13,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10989 conditions, 5515 events. 2455/5515 cut-off events. For 1911/1911 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 39213 event pairs, 876 based on Foata normal form. 0/5323 useless extension candidates. Maximal degree in co-relation 10558. Up to 3863 conditions per place. [2024-02-07 14:54:13,376 INFO L140 encePairwiseOnDemand]: 111/116 looper letters, 71 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2024-02-07 14:54:13,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 105 transitions, 476 flow [2024-02-07 14:54:13,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:54:13,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:54:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2024-02-07 14:54:13,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488505747126436 [2024-02-07 14:54:13,378 INFO L175 Difference]: Start difference. First operand has 102 places, 88 transitions, 270 flow. Second operand 3 states and 191 transitions. [2024-02-07 14:54:13,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 105 transitions, 476 flow [2024-02-07 14:54:13,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 105 transitions, 468 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:54:13,382 INFO L231 Difference]: Finished difference. Result has 97 places, 84 transitions, 261 flow [2024-02-07 14:54:13,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=97, PETRI_TRANSITIONS=84} [2024-02-07 14:54:13,383 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -7 predicate places. [2024-02-07 14:54:13,383 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 84 transitions, 261 flow [2024-02-07 14:54:13,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:13,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:13,384 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-02-07 14:54:13,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:54:13,384 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2024-02-07 14:54:13,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:13,384 INFO L85 PathProgramCache]: Analyzing trace with hash 257041084, now seen corresponding path program 1 times [2024-02-07 14:54:13,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:13,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62760254] [2024-02-07 14:54:13,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:13,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:54:13,396 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:54:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:54:13,406 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:54:13,406 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:54:13,407 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 32 remaining) [2024-02-07 14:54:13,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 32 remaining) [2024-02-07 14:54:13,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 32 remaining) [2024-02-07 14:54:13,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (28 of 32 remaining) [2024-02-07 14:54:13,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 32 remaining) [2024-02-07 14:54:13,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 32 remaining) [2024-02-07 14:54:13,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 32 remaining) [2024-02-07 14:54:13,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 32 remaining) [2024-02-07 14:54:13,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 32 remaining) [2024-02-07 14:54:13,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 32 remaining) [2024-02-07 14:54:13,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 32 remaining) [2024-02-07 14:54:13,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 32 remaining) [2024-02-07 14:54:13,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 32 remaining) [2024-02-07 14:54:13,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 32 remaining) [2024-02-07 14:54:13,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 32 remaining) [2024-02-07 14:54:13,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 32 remaining) [2024-02-07 14:54:13,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 32 remaining) [2024-02-07 14:54:13,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 32 remaining) [2024-02-07 14:54:13,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 32 remaining) [2024-02-07 14:54:13,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 32 remaining) [2024-02-07 14:54:13,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 32 remaining) [2024-02-07 14:54:13,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 32 remaining) [2024-02-07 14:54:13,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 32 remaining) [2024-02-07 14:54:13,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 32 remaining) [2024-02-07 14:54:13,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 32 remaining) [2024-02-07 14:54:13,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 32 remaining) [2024-02-07 14:54:13,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 32 remaining) [2024-02-07 14:54:13,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 32 remaining) [2024-02-07 14:54:13,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 32 remaining) [2024-02-07 14:54:13,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 32 remaining) [2024-02-07 14:54:13,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 32 remaining) [2024-02-07 14:54:13,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 32 remaining) [2024-02-07 14:54:13,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:54:13,411 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-02-07 14:54:13,412 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 14:54:13,412 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-07 14:54:13,441 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-07 14:54:13,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 159 transitions, 345 flow [2024-02-07 14:54:13,464 INFO L124 PetriNetUnfolderBase]: 38/266 cut-off events. [2024-02-07 14:54:13,465 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-02-07 14:54:13,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 266 events. 38/266 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1322 event pairs, 1 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 186. Up to 12 conditions per place. [2024-02-07 14:54:13,466 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 159 transitions, 345 flow [2024-02-07 14:54:13,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 159 transitions, 345 flow [2024-02-07 14:54:13,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:54:13,469 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@8aa848e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:54:13,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-02-07 14:54:13,471 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:54:13,471 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-02-07 14:54:13,471 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:54:13,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:13,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:54:13,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2024-02-07 14:54:13,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:13,472 INFO L85 PathProgramCache]: Analyzing trace with hash 669129315, now seen corresponding path program 1 times [2024-02-07 14:54:13,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:13,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471634959] [2024-02-07 14:54:13,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:13,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:13,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:13,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471634959] [2024-02-07 14:54:13,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471634959] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:13,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:13,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:13,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248097502] [2024-02-07 14:54:13,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:13,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:13,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:13,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:13,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:54:13,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 159 [2024-02-07 14:54:13,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 159 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:13,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:13,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 159 [2024-02-07 14:54:13,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand